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Star of the Sea

Roll number: 15995L Leahy's Terrace, Sandymount, Dublin 4

School details

Address: Leahy's Terrace, Sandymount, Dublin 4 (D04XW14)
Email: [email protected]
Phone: 016686394
Principal: Niall Walsh
Ethos: Catholic
DEIS: N
Irish classification: No subjects through Irish
Gaeltacht: N
Island: N
Local authority: Dublin City Council
School patron: Archbishop of Dublin
School type: Ordinary with Special Classes
School level: All-Through School
Planning area: Dublin2_Dublin4

Class size history

Mainstream class group data is shown separately from standard/year-group enrolment data. The source does not identify which standard/year group each class group belongs to.

Average class size

24.11

2025/26

Mainstream classes

2025/26

Largest class group

2025/26

Classes with 30+ pupils

2025/26

Class group metrics trend

Class group metrics by year

Year	Mainstream class pupils	Mainstream classes	Average class size	Largest class	Classes 30+
2006/07	295	11	26.82	33	3
2007/08	296	11	26.91	32	4
2008/09	316	11	28.73	36	6
2009/10	304	11	27.64	33	4
2010/11	329	12	27.42	33	3
2011/12	335	13	25.77	33	4
2012/13	342	12	28.50	32	5
2013/14	375	14	26.79	33	3
2014/15	368	14	26.29	32	3
2015/16	358	14	25.57	31	2
2016/17	367	13	28.23	33	6
2017/18	353	14	25.21	33	4
2019/20	325	13	25.00	31	2
2020/21	315	13	24.23	32	2
2021/22	295	12	24.58	32	2
2022/23	273	12	22.75	29	0
2023/24	243	11	22.09	29	0
2024/25	220	10	22.00	29	0
2025/26	217	9	24.11	30	1

Data highlights

Key numbers to spot outliers or notable changes.

Biggest gain in a single year: 1993/94: 302 in 1982/83 → 354, +52 pupils.
Biggest loss in a single year: 2023/24: 277 in 2022/23 → 249, -28 pupils.
Largest single-class increase: 5th Class in 2021/22 (30 → 46, +16).
Largest single-class decrease: 6th Class in 2021/22 (48 → 30, -18).
Largest cohort-step gain: 1st → 2nd in 2023/24 (34 → 37, +3).
Largest cohort-step loss: 2nd → 3rd in 2022/23 (37 → 27, -10).
Overall: 327 (1975/76) → 223 (2025/26), -104.

Summary statistics (class-level data)

Min / max / mean enrolment per class across the available final by-standard years.

Class	Min	Max	Mean	Years
Junior Infants	25	37	30.8	6
Senior Infants	26	37	31.7	6
1st Class	29	38	33.0	6
2nd Class	29	37	33.5	6
3rd Class	25	43	31.7	6
4th Class	22	46	33.2	6
5th Class	25	46	32.7	6
6th Class	24	48	35.2	6
Total	223	375	318.5	41

Total enrolment over time

Total and gender trends use historical records where available. Class-level data starts in 2020/21.

Enrolment by gender over time

Enrolment by class over time

Cohort progression

Base cohort:

Track how each cohort (pupils who were in the same class in the same year) progresses through the school. Each step shows the count; the number between steps is the net change (pupils gained minus pupils lost).

Cohort 2020/21

JI 2020/21 37

-2

SI 2021/22 35

-1

1st 2022/23 34

2nd 2023/24 37

-5

3rd 2024/25 32

-2

4th 2025/26 30

Cohort 2021/22

JI 2021/22 35

-3

SI 2022/23 32

-1

1st 2023/24 31

2nd 2024/25 31

3rd 2025/26 31

Cohort 2022/23

JI 2022/23 34

-3

SI 2023/24 31

-1

1st 2024/25 30

2nd 2025/26 31

Cohort 2023/24

JI 2023/24 29

SI 2024/25 29

1st 2025/26 29

Cohort 2024/25

JI 2024/25 25

SI 2025/26 26

Cohort 2025/26

JI 2025/26 25

Raw data by year

Year	Female	Male	JI	SI	1st	2nd	3rd	4th	5th	6th	Total
1975/76	–	–	–	–	–	–	–	–	–	–	327
1976/77	–	327	–	–	–	–	–	–	–	–	327
1977/78	–	327	–	–	–	–	–	–	–	–	327
1978/79	–	336	–	–	–	–	–	–	–	–	336
1979/80	–	323	–	–	–	–	–	–	–	–	323
1980/81	–	307	–	–	–	–	–	–	–	–	307
1981/82	–	297	–	–	–	–	–	–	–	–	297
1982/83	–	302	–	–	–	–	–	–	–	–	302
1993/94	–	354	–	–	–	–	–	–	–	–	354
1994/95	–	334	–	–	–	–	–	–	–	–	334
1995/96	–	332	–	–	–	–	–	–	–	–	332
1996/97	–	329	–	–	–	–	–	–	–	–	329
1997/98	–	324	–	–	–	–	–	–	–	–	324
1998/99	–	322	–	–	–	–	–	–	–	–	322
1999/00	–	320	–	–	–	–	–	–	–	–	320
2000/01	–	321	–	–	–	–	–	–	–	–	321
2001/02	–	324	–	–	–	–	–	–	–	–	324
2002/03	–	311	–	–	–	–	–	–	–	–	311
2003/04	–	318	–	–	–	–	–	–	–	–	318
2004/05	–	314	–	–	–	–	–	–	–	–	314
2005/06	–	312	–	–	–	–	–	–	–	–	312
2006/07	–	295	–	–	–	–	–	–	–	–	295
2007/08	–	296	–	–	–	–	–	–	–	–	296
2008/09	–	316	–	–	–	–	–	–	–	–	316
2009/10	–	304	–	–	–	–	–	–	–	–	304
2010/11	–	329	–	–	–	–	–	–	–	–	329
2011/12	–	335	–	–	–	–	–	–	–	–	335
2012/13	–	342	–	–	–	–	–	–	–	–	342
2013/14	–	375	–	–	–	–	–	–	–	–	375
2014/15	–	368	–	–	–	–	–	–	–	–	368
2015/16	–	358	–	–	–	–	–	–	–	–	358
2016/17	–	367	–	–	–	–	–	–	–	–	367
2017/18	–	353	–	–	–	–	–	–	–	–	353
2018/19	–	346	–	–	–	–	–	–	–	–	346
2019/20	–	325	–	–	–	–	–	–	–	–	325
2020/21	–	315	37	37	38	36	43	46	30	48	315
2021/22	–	298	35	35	36	37	32	44	46	30	298
2022/23	–	277	34	32	34	29	27	29	43	45	277
2023/24	–	249	29	31	31	37	25	28	25	38	249
2024/25	–	226	25	29	30	31	32	22	27	24	226
2025/26	–	223	25	26	29	31	31	30	25	26	223